Buffing or polishing machine.



L. L. PFEIFER.

BUFFING 0R POLISHING MACHINE. APPLICATION FILED NOV. 15. I916,

LQWWUL Patented Ju1y'17, 1917.

ET T@.

LEO L. PFEIFEB, 0F COLUMBUS, OHIO, ASSIGNOR TO THE JOHN W. BROWN MANUFAC- TUBING COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF OHIO.

' BUFFING OR POLISHING MACHINE.

Specification of Letters Patent.

Patented July 1'7, 191?.

Application filed November 15, 1916; Serial No. 131,366.

To all whom it may concern.

the interior or reflecting surfaces of searchlights or headlights particularly those used in connection with motor vehicles. Also, my

invention is directed toward and an im-' e provement over that type of machlne 1llustrated inmy co-pending application Serial Number 115119, filed August 16, 1916.

The main object of this invention resides in the combination of a die and polishing head or member capable of a relative rotativc movement when the two are brought together with a reflector between them, with a pocket or channel structure inset slightly from the face of the plunger to allow the pocketing or circulation of a polishing liquid in order that an adequate supply may at all times be had to cooperate with the abrading surfaces. Specifically, my inven-. tion also has for itsobject the radial arrangement of abrading members upon the polishing head in such manner that they protrude slightly beyond the. face of the polishing head to, in this manner, present channels between the abrading members.

1 This type of polishing head used in combination with a die and means for permitting the free circulation of a polishing liquid between the die and polishing head produces a highly effective type of machine.

' The preferred embodiment of my invention is shown in the accompanying sheet of drawings, in which similar characters of reference designate corresponding parts, and in which:

Figure 1 is a view mainly in side elevation but showing the die in section of my im proved type of polishing machine,

Fig. 2 is a bottomface View of my improved type of polishing head designed for use in connection with this machine, and,

Fig. 3 is an enlarged fragmentary section of a portion of the head showing the manner in which the abrading strips are held in position.

In the drawings, the machine is shown as constituting a main framework, of which the portion 2 forms the base and from WlllCll there extends vertically a bracket portion 3 having a journal portion 4 at its outer end. Within this journal portion there is rotatably mounted a shaft 5 and upon the upper end of this shaft there is rigidly secured a pulley 6 by means of which the driving power may be supplied thereto and upon the lower end thereof there is mounted myimproved type of chuck or polishing head 7.

This polishing head is designed to co6peri ate with a die 8 which may be of any preferred material, but which is formed with a concavity 9 so shaped. to snugly fit the reflector member 10. Also, this die is provided with a series of passageways 11 which lead to the central aperture 12 within the lining member 13 and which also communicate with the interior of the receptacle 14 at their outer ends. This receptacle is designedto be supplied with a polishing liquid of the desired character and by means of the passageways, this polishing liquid may have access to or freely circulate between the polishing head and the reflector being polished. This receptacle itself is securely mounted upo'nthe shaft 15 which shaft is movable vertically through its bearing 16 in the base portion 2. l have illustrated a simple type of movement consisting of a link 18 pivotally secured at its lower end at 19 to the shaft and pivotally secured at its upper end at 20 to the lever arm 21. This lever is rigidly secured to a stub shaft 22 and each time this stub shaft is oscillated by means of the handle 23, the receptacle is given a vertical movement. It is essential only that the die and polishing head he relatively movable to bring them together and it will, therefore, be understood that any manner of structure for accomplishing this is considered by me to be within the scope of the appended claims.

tween them in which spaces the polishing liquid is either allowed to collect or to freely flow during the normal operation of the device. The circulation depends a great deal upon the speed at which the polishing head is rotated, the liquid circulating under the influence of this rotation and in such circulation, a fresh supply is always on hand to supply the necessary polishing ingredients. These abrading strips are removably secured imposition by a plurality of screws 27 which clamp them in a position after themanner shown in Fig. 8. Thus, after the a brading members become worn, they may be very readily removed and replaced bysimply loosening the screws 27 and then again moving them into clamping position.

From the foregoing'description, it will be apparent-that I have provided a type of ma chine in which the abrading members may be renewed as I may be .found necessary.

Also, by so constructing and arranging these abrading members that they project beyond the surface of the polishing-head and form tive rotation between said two elements when they are together with the object to be polished between them, and means whereby said p'ocketportions are maintained in con-' stantiasupply with a polishingliquid when said two elements are together.

2. A polishing machine of the character describedlc'omprising adie, a polishing head formed with abrading portions and pocket portions, means for causing a relative rotation between the die and head when they are together with a reflector between them, and means whereby said pocket portions are maintained in supply with a polishing liquid when the die and head are together.

3. A polishing machine of the character described comprising a die, a polishing head formed with abrading portions and depressed channels between abrading portions arranged to permit a free flow of a polishing liquid therethrough, and means for causing a relative rotation between the die and head when they are together with a reflector between them.

4. A polishing machine of the: character described comprising a concaved die, a polishing head, removable abrading strips secured in said head and projecting outwardly therefrom to form channels through which a polishin'g liquid may flow, means whereby a polishing liquid may be fed to said channels, and means for causing a relative rota-tion between said die and head when they are together with a reflector between them. 5. A polishing machine of the character described comprising. a die, a polishing head, removable pliable abrading. members on said head, means for causing a relative rotation between said die and head when they are together with a reflector between them, and means whereby a circulation of polishing. liquid may be maintained between said die and head when such relative rotation occurs.

In testimony whereof I aflix my signature in presence of two witnesses.

LEO L. PFEIFER.

Witnesses:

WALTER E. L. Boon, A. L. PHELPS.

Copies of this patent may be obtained forfive cents each, by. addressing the "Gommissioner of .Eatemts,

Washington,-D.- G. 

